4G LTE & 5G Coverage In Sunnyvale

The table below shows the proportion of Sunnyvale with coverage from different cellular technologies.

Network	4G Coverage	5G Coverage
AT&T	100%	100%
T-Mobile	100%	99%
Verizon	100%	100%
Dish	0%	72%

Don't be alarmed by Dish's lack of 4G coverage in Sunnyvale. Dish has a newly-built network that's 5G-only.

US Cellular And Dish Roaming Coverage

US Cellular does not have native coverage in Sunnyvale. However, some US Cellular subscribers may still have coverage in Sunnyvale thanks to roaming agreements.

The 72% figure for Dish may understate what subscribers in Sunnyvale experience after accounting for roaming agreements.

Sunnyvale Cell Signal Strength

There are 524 map hexes within the census-defined boundaries of Sunnyvale. The table below shows the proportion of hexes at various levels of signal strength. Where both 4G and 5G coverage is available, data is drawn from whichever technology offers a stronger signal.

Network	Strong	Decent	Weak	None
AT&T	12%	70%	18%	0%
T-Mobile	53%	47%	0%	0%
Verizon	29%	71%	0%	0%
Dish	1%	52%	19%	28%

For most purposes, decent signals are perfectly sufficient. Weak or non-existent signals cause far greater degradation in user experience.

Crowdsourced Coverage Data In Sunnyvale

Coverage Critic has 22,311 crowdsourced data points from 336 map hexes within the boundaries of Sunnyvale. Data is available for AT&T, T-Mobile, and Verizon.

Network	Unique Hexes	Total Observations
AT&T	280	9,645
T-Mobile	226	7,775
Verizon	247	4,867

Click here to toggle to the map's crowdsourced data layer.

California State-Wide Coverage Scores

Network	Coverage Score
Verizon	8.8 / 10
AT&T	8.6 / 10
T-Mobile	8.2 / 10

Data Sourcing

Coverage maps draw on data from the FCC's Broadband Data Collection and Coverage Critic's crowdsourcing.

The coverage information for Sunnyvale is rated as medium-high confidence. Documentation is available elsewhere covering limitations of Coverage Critic's approach.